/Engine/Plugins/Runtime/GeoReferencing/Source/GeoReferencing/Public/GeoReferencingSystem.h
Convert a Coordinate expressed in GEOGRAPHIC CRS to ECEF CRS
void GeographicToECEF ( const [FGeographicCoordinates](API\Plugins\GeoReferencing\FGeographicCoordinates) & GeographicCoordinates, FVector & ECEFCoordinates )